*{
    box-sizing: border-box;
}

body{
    margin: 0;
}

p{
    line-height: 30px;
    font-size: 15px;
}

/* 最顶侧 */
.header{
    background-color: #f1f1f1;
    padding:20px;
    text-align: center;
}

/* 头部导航栏 */
.topnav{
    height: 50px;
    overflow: hidden;
}

.topnav a{
    float: left;
    color: black;
    font-size: 14px;
    padding:14px ;
    text-decoration: none;
    
}

/*多栏*/
.column{
    float: left;
    padding: 10px;
}

/* 两侧栏 */
.column.side{
    width: 25%;
    background-color: blanchedalmond;
    height: 5000px;
}

/* 中间栏 */
.column.middle{
    width:50%;
    background-color: antiquewhite;
    height: 5000px;
}

/*人员表格*/
.people_table{
    position: relative;
    border: solid 2px black;
    font-size: 20px;
    top:50px;
}

.people_table td{
    width:200px;
}


#speed{
    height: 75px;
    width: 75px;
    position: fixed;
    top:500px;
}

#basketball{
    width:75px;
    height: 75px;
    position: fixed;
    top:350px;
}

#submitButton{
    position: relative;
    top: 15px;
    left: 80px;
}

#clearButton{
    position: relative;
    top: 15px;
    left: 155px;
}

